The series follows the travels of Jun, a young man journeying with the cat-girl demon Mao and her companion, Shino, in search of secluded hot springs. Their quest for relaxation invariably dissolves into a series of intense sexual encounters. The arc sees Jun relentlessly exploiting the naive and lustful Mao, using her demonic desires against her. At each hidden spring, he subjects her to degrading and humiliating acts, often with Shino being forced to watch or participate. Jun's dominance is absolute as he pushes Mao's physical and mental limits, engaging in everything from rough, forceful fucking to public humiliation and intense impregnation scenes. The narrative climaxes as Mao's demonic powers and her insatiable lust are completely subjugated by Jun, her body and will entirely given over to his carnal whims in every steamy, cum-drenched location they discover.